The highest 1-hour maximum precipitation on re- cord was measured in Suncheon (145.0 mm) on July 31, 1998. This is attributed to localized heavy rain resulting from a strong ascending air current formed by the combination of the North Paci c High and low pressure associated with the southerly on the windward
side of Jirisan. The second highest 1-hour maximum precipitation was recorded in Ganghwa (123.5 mm) on August 6, 1998.
The highest maximum daily precipitation on record occurred in Gangneung (870.5 mm) on August 31, 2002 in the aftermath of Typhoon Rusa, followed by
Daegwallyeong (712.5 mm) on the same day, Jang- heung (547.4 mm) on September 2, 1981 in the after- math of Typhoon Agnes, and Pohang (516.4 mm) on September 30, 1998 due to Typhoon Yanni.
The maximum consecutive 2-day and 5-day precipi- tation are used as extreme climate indices, representing
intensity of precipitation. They are high in Daegwally- eong, Yeongdong region, the southern region including Jejudo, and north Gyeonggi-do, while they are low in Gyeongsangbuk-do, including Daegu.